Well, it was worth a shot. I can’t explain why mine have no problem, even here on a hotel network.
You're right, it is worth testing! I thought something similar and tried a few myself to no avail. The entire internet is basically balancing on top of 8.8.8.8 so if all of a sudden it stopped resolving Roku URLs there would be some fantastic news worthy meltdowns. This is the most active issue on the board, so its unlikely that all these folks across all these different devices are all using a borked DNS server.
My best running hypothesis is ghosts.
